70 lines
3.0 KiB
C
70 lines
3.0 KiB
C
/* -------------------------------------------------------------------------
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*
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* parse_func.h
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*
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*
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*
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* Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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* Portions Copyright (c) 2021, openGauss Contributors
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*
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* src/include/parser/parse_func.h
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef PARSER_FUNC_H
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#define PARSER_FUNC_H
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#include "catalog/namespace.h"
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#include "parser/parse_node.h"
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/*
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* This structure is used to explore the inheritance hierarchy above
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* nodes in the type tree in order to disambiguate among polymorphic
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* functions.
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*/
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typedef struct _InhPaths {
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int nsupers; /* number of superclasses */
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Oid self; /* this class */
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Oid* supervec; /* vector of superclasses */
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} InhPaths;
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/* Result codes for func_get_detail */
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typedef enum {
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FUNCDETAIL_NOTFOUND, /* no matching function */
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FUNCDETAIL_MULTIPLE, /* too many matching functions */
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FUNCDETAIL_NORMAL, /* found a matching regular function */
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FUNCDETAIL_AGGREGATE, /* found a matching aggregate function */
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FUNCDETAIL_WINDOWFUNC, /* found a matching window function */
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FUNCDETAIL_COERCION /* it's a type coercion request */
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} FuncDetailCode;
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extern Node *ParseFuncOrColumn(ParseState *pstate, List *funcname, List *fargs, Node *last_srf, FuncCall *fn,
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int location, bool call_func = false);
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extern FuncDetailCode func_get_detail(List* funcname, List* fargs, List* fargnames, int nargs, Oid* argtypes,
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bool expand_variadic, bool expand_defaults, Oid* funcid, Oid* rettype, bool* retset, int* nvargs, Oid* vatype,
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Oid** true_typeids, List** argdefaults, bool call_func = false, Oid* refSynOid = NULL, int* rettype_orig = NULL);
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extern int func_match_argtypes(
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int nargs, Oid* input_typeids, FuncCandidateList raw_candidates, FuncCandidateList* candidates);
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extern FuncCandidateList func_select_candidate(int nargs, Oid* input_typeids, FuncCandidateList candidates);
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extern void make_fn_arguments(ParseState* pstate, List* fargs, Oid* actual_arg_types, Oid* declared_arg_types);
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extern const char* funcname_signature_string(const char* funcname, int nargs, List* argnames, const Oid* argtypes);
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extern const char* func_signature_string(List* funcname, int nargs, List* argnames, const Oid* argtypes);
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extern Oid LookupFuncName(List* funcname, int nargs, const Oid* argtypes, bool noError);
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extern Oid LookupFuncNameTypeNames(List* funcname, List* argtypes, bool noError);
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extern Oid LookupFuncNameOptTypeNames(List* funcname, List* argtypes, bool noError);
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extern Oid LookupPackageNames(List* pkgname);
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extern Oid LookupAggNameTypeNames(List* aggname, List* argtypes, bool noError);
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extern Oid LookupTypeNameOid(const TypeName* typname);
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extern void check_srf_call_placement(ParseState *pstate, Node *last_srf, int location);
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extern void check_pg_get_expr_args(ParseState* pstate, Oid fnoid, List* args);
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extern int GetPriority(Oid typeoid);
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#endif /* PARSE_FUNC_H */
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